111213031311 has 12 divisors (see below), whose sum is σ = 164982695592. Its totient is φ = 72138182256.

The previous prime is 111213031283. The next prime is 111213031313. The reversal of 111213031311 is 113130312111.

111213031311 is a `hidden beast` number, since 111 + 213 + 0 + 31 + 311 = 666.

It is not a de Polignac number, because 111213031311 - 2¹⁰ = 111213030287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213031313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166986201 + ... + 166986866.

It is an arithmetic number, because the mean of its divisors is an integer number (13748557966).

Almost surely, 2^111213031311 is an apocalyptic number.

111213031311 is a deficient number, since it is larger than the sum of its proper divisors (53769664281).

111213031311 is a wasteful number, since it uses less digits than its factorization.

111213031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333973110 (or 333973107 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111213031311 its reverse (113130312111), we get a palindrome (224343343422).

The spelling of 111213031311 in words is "one hundred eleven billion, two hundred thirteen million, thirty-one thousand, three hundred eleven".